. >> the protesters also called on president obama to end u.s. aide to israel. >> members of congress saw the attack on the u.s. consolate in benghazi firsthand. that was recorded on security cameras. cbs news reporter david martin's sources told him what they show. >> reporter: the first video of the attack was captured by cell phones. it took about 10 more days for the fbi to get its hands on video taken by security cameras. that class fewed video shown to the house and senate intelligence committees answers sop of the questions surrounding the attack. a u.s. intelligence official shows it has no sign of how it -- the attack was not well planned. the attackers did not know the layout of the compound. the attack lasted about an hour. the surviving americans retreated to a cia safe house about a mile away where they continued to take fire from small arms and rocket propelled grenades. after another hour the shooting stopped. for four hours no shots were fired giving the rescue team time to make its way to the annex. ten minutes after they arrived